<template>
  <transition name="move">
    <div class="food" v-show="showFlag" ref="food">
      <div class="food-content">
        <div class="image-header">
          <img :src="food.image">
          <div class="back" @click="back">
            <i class="icon-arrow_lift"></i>
          </div>
        </div>
        <div class="content">
          <h1 class="title">{{food.name}}</h1>
          <div class="detail">
            <span class="sell-count">月售{{food.sellCount}}份</span>
            <span class="rating">好评率{{food.rating}}%</span>
          </div>
          <div class="price">
            <span class="new-price">￥{{food.price}}</span>
            <span class="old-price" v-show="food.oldPrice">￥{{food.oldPrice}}</span>
          </div>
          <div class="cartcontrol-wrapper">
            <cartcontrol :food="food" @add="addFood"></cartcontrol>
          </div>
          <transition name="fade">
            <div class="buy" @click.stop.parent="addFirst" v-show="!food.count || food.count===0">加入购物车</div>
          </transition>
        </div>
        <split v-show="food.info"></split>
        <div class="info" v-show="food.info">
          <h1 class="info-title">商品介绍</h1>
          <p class="info-text">{{food.info}}</p>
        </div>
        <split></split>
        <div class="rating">
          <h1 class="title">商品评价</h1>
          <ratingselect @select="selectRating" @toggle="toggleContent"  v-bind:desc="desc" :ratings="food.ratings" :selectType="selectType" :onlyContent="onlyContent">
          </ratingselect>
        </div>
        <div class="rating-wrapper">
          <ul v-show="food.ratings && food.ratings.length" >
            <li v-for="rating,index in food.ratings" class="rating-item border-1px" v-show="needShow(rating.rateType,rating.text)">
              <div class="time">{{ rating.rateTime | formatDate }}</div>
              <p class="rating-content">
                <span class="icon" :class="{'icon-thumb_up':rating.rateType === 0,'icon-thumb_down':rating.rateType ===1}"></span>
                <span class="text">{{rating.text}}</span>
              </p>
              <div class="rating-user">
                <span class="name">{{rating.username}}</span>
                <img class="avatar" width="12" height="12" :src="rating.avatar"></img>
              </div>
            </li>
          </ul>
          <div class="no-rating" v-show="!food.ratings || !food.ratings.length">暂无评价</div>
        </div>
      </div>
    </div>
  </transition>

</template>

<script type="text/ecmascript-6">
  import BScroll from 'better-scroll';
  import Vue from 'vue';
  import cartcontrol from '../../components/cartcontrol/cartcontrol.vue';
  import split from '../../components/spllit/split.vue';
  import ratingselect from '../../components/ratingselect/ratingselect.vue';
  import {formatDate} from '../../common/js/date';

  const ALL = 2;

    export default {
      props: {
        food: {
          type: Object
        }
      },
      data() {
        return {
          showFlag: false,
          desc: {
            all: '全部',
            positive: '推荐',
            nagative: '吐槽'
          },
          selectType: ALL,
          onlyContent: true
        };
      },
      methods: {
        show() {
//          初始化
          this.showFlag = true;
          this.selectType = ALL;
          this.onlyContent = true;
          this.$nextTick(() => {
            if (!this.scorll) {
              this.scroll = new BScroll(this.$refs.food, {
                click: true
              });
            } else {
              this.scroll.refresh();
            }
          });
        },
        back() {
          this.showFlag = false;
        },
        addFirst(e) {
//        当better-scroll 派发的点击事件不存在时（即pc端），不做处理
          if (!e._constructed) {
            return;
          }
          this.$emit('add', e.target);
          Vue.set(this.food, 'count', 1);
        },
        addFood(target) {
          this.$emit('add', target);
        },
        toggleContent() {
          this.onlyContent = !this.onlyContent;
          this.$nextTick(() => {
            this.scroll.refresh();
          });
        },
        selectRating(type) {
          this.selectType = type;
//          异步更新
          this.$nextTick(() => {
            this.scroll.refresh();
          });
        },
        needShow(type, text) {
//          判断是否有内容   
          if (this.onlyContent && !text) {
            return false;
          }
          if (this.selectType === ALL) {
            return true;
          } else {
            return this.selectType === type;
          }
        }
      },
      filters: {
        formatDate(time) {
          let date = new Date(time);
          return formatDate(date, 'yyyy-MM-dd hh:mm');
        }
      },
      components: {
        cartcontrol,
        split,
        ratingselect
      }
    };
</script>

<style lang="stylus" rel="stylesheet/stylus">
  @import "../../common/stylus/mixin.styl"
  .food
    position: fixed
    top: 0
    left: 0
    width: 100%
    bottom: 48px
    z-index: 30
    background: #fff
    transform: translate3d(0,0,0)
    &.move-enter-active,&.move-leave-active
      transition: all .5s linear
    &.move-enter,&.move-leave-active
      transform: translate3d(100%,0,0)
    .image-header
      position: relative
      width: 100%
      height: 0
      padding-top: 100%
      img
        position: absolute
        top: 0
        left: 0
        width: 100%
        height: 100%
      .back
        position: absolute
        top: 10px
        left: 0
        .icon-arrow_lift
          display: block
          padding: 10px
          font-size: 20px
          color: #fff
    .content
      position: relative
      padding: 18px
      .title
        margin-bottom: 8px
        line-height: 14px
        font-size: 14px
        font-weight: 700
        color:rgb(7,17,27)
      .detail
        margin-bottom: 18px
        height: 10px
        line-height: 10px
        font-size: 0
        .sell-count,.rating
          font-size: 10px
          color: rgb(147,153,159)
        .sell-count
          margin-right: 12px
      .price
        line-height: 24px
        font-size: 0
        .new-price
          margin-right: 8px
          font-size: 14px
          font-weight: 700
          color:rgb(240,20,20)
        .old-price
          font-size: 10px
          font-weight: 700px
          text-decoration: line-through;
          color: rgb(147,153,159)
      .cartcontrol-wrapper
        position: absolute
        right: 12px
        bottom: 12px
      .buy
        position: absolute
        right: 18px
        bottom: 18px
        padding: 0 12px
        z-index: 10
        height: 24px
        line-height: 24px
        font-size: 10px
        box-sizing: border-box
        border-radius: 12px
        color: #fff
        background-color: rgb(0,160,220)
        opacity: 1
        &.fade-enter-active,&.fade-leave-active
          transition: all .2s
        &.fade-enter,&.fade-leave-active
          opacity: 0
    .info
      position: relative
      padding: 18px
      .info-title
        margin-bottom: 6px
        line-height: 14px
        font-size: 14px
        color: rgb(7,17,27)
      .info-text
        margin: 0 8px
        line-height: 24px
        font-size: 12px
        font-weight: 200
        color: rgb(77,85,93)
    .rating
      position: relative
      padding-top: 18px
      .title
        margin-left: 18px
        line-height: 14px
        font-size: 14px
        color: rgb(7,17,27)
    .rating-wrapper
      padding: 0 18px
      .rating-item
        position: relative
        padding: 16px 0
        border-1px(rgba(0,17,27,.1))
        .time
          margin-bottom: 6px
          line-height: 12px
          color: rgb(147,153,159)
          font-size: 10px
        .rating-content
          font-size: 0
          .icon
            margin-right: 4px
            line-height:16px
            font-size: 12px
            &.icon-thumb_down
              color: rgb(147,153,159)
            &.icon-thumb_up
              color: rgb(0,160,220)
          .text
            line-height:16px
            font-size: 12px
            color: rgb(7,17,27)
        .rating-user
          position: absolute
          right: 0
          top: 16px
          line-height: 12px
          font-size: 0
          .name
            display: inline-block
            margin-right: 6px
            vertical-align: top
            line-height: 12px
            font-size: 10px
            color: rgb(147,153,159)
          .avatar
            border-radius: 50%;
            display: inline-block
            vertical-align: top
      .no-rating
        padding: 16px 0
        font-size: 12px
        color: rgb(147,153,159)
</style>
